19929834 has 16 divisors (see below), whose sum is σ = 44288640. Its totient is φ = 6643260.

The previous prime is 19929827. The next prime is 19929853. The reversal of 19929834 is 43892991.

It is a self number, because there is not a number n which added to its sum of digits gives 19929834.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184482 + ... + 184589.

It is an arithmetic number, because the mean of its divisors is an integer number (2768040).

Almost surely, 2^19929834 is an apocalyptic number.

19929834 is an abundant number, since it is smaller than the sum of its proper divisors (24358806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19929834 is a wasteful number, since it uses less digits than its factorization.

19929834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369082 (or 369076 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 19929834 is about 4464.2842651426. The cubic root of 19929834 is about 271.1239566733.

The spelling of 19929834 in words is "nineteen million, nine hundred twenty-nine thousand, eight hundred thirty-four".